George Francis, the nation's oldest man, who lived through both world wars, man's first walk on the moon and the election of the first black president, has died. He was 112.

Francis died Saturday of congestive heart failure at a nursing home in Sacramento, his son, Anthony Francis, said Sunday.

"He lived four years in the 19th century, 100 years in the 20th century, and 8 years in the 21st century. We call him the man of three centuries," said the younger Francis, 81.

UCLA gerontologist Dr. Stephen Coles, who maintains a list of the world's oldest people, said Francis lived 112 years and 204 days.

With Francis' death, Walter Breuning of Montana, who is 112 years, 98 days old, becomes the country's oldest living man. At 114, Gertrude Baines of Los Angeles is the nation's oldest living person. The world's oldest person is Maria de Jesus of Portugal, who is 115 years, 109 days old, and the oldest man is Tomoji Tanabe of Japan, who is 113 years, 101 days, Coles said.

Francis, who at his prime barely weighed more than 100 pounds, was born June 6, 1896, in New Orleans. As an African-American in the South, he felt the sting of the Jim Crow-era segregation laws in his early life.

His son said Francis tried to enlist in the U.S. Army during World War I but was turned down because of his stature.